Ribbon-spool for type-writing machines.



G.B.BRAND.; O RIBBON SPOOL FOB TYPE WRITING MACHINES. APPLICATION FILED JULY 22, 1907.

902,552. Patented Nov. 3, 1908.

FIGQII \A/ITNEEEES: INVENTEIR:

I 1-15 ATTORNEY 'nnrrnn STATES PATENT OFFICE.

GEORGE B. BRAND, OF SYRACUSE, NEW YORK, ASSIGNOR TO THE MONARCH TYPEWRITER COMPANY, OF SYRACUSE, NEW YORK, A CORPORATION OF NEW YORK.

RIBBON-SPOOL FOR TYPENZRITING MACHINES.

' To all whom it may concern:

l 3e it known that I, GEORGE B. BRAND, citizen of the United States, and resident of Syracuse, in the county of Onondaga and State of New York, have invented'certainferred to in the following description and particularly pointed out in the appended claims.

In the drawings, Figure 1 is a horizontal sectional view of a ribbon spool embodfing my invention, the section being taken on the line :ca; of Fig. 2 and looking in the direction of the arrows at said line. vertical sectional view of the same taken on the line yy of Fig. 1 and looking in the direction of the arrows at said line. Tn, Fig. 2 as well in liig. 1 the ribbon spool is shown mounted upon its driving spindle.

The spool comprises flanges 1 and 2 with central perforations 3 therein for the reception of a driving spindle 4 suitably mounted and driven in the typewriter proper. The flanges are preferably made ol sheet metal and are united and maintained spaced apart by posts or shouldered rivets 5, the shoulders of said rivets being indicated at- 6 and the heads or ends thereof at 7. The rivets in the present. instance are three in number and are arranged around andsituated at uniform distances from the central perforations in the flanges and constitute a core around which the ribbon is wound. The lowermost flange .3 has a series of circularly arranged p forations 8 for co 'iperation with engaging nw-jections 9 that extend upwardly from a coilar W secured to the driving spindle by a pir. 31. as in the Monarch t pewriter. That il-m'ilon of the driving spindle which is contained within the ribbon spool is cut out or recessed at 12 for the rece )ilOIl of a leaf sprin; 13 secured at one end by a ri et 1 1.

Specification of Letters Patent. Application filed. my 22, 1907. Serial No. 384,927.

Fig. 2 1s a Patented. Nov. 3, 1908.

at 15 and normally extends outwardly beyond the surface of the driving spindle-so as to form'an engaging ortion which cooperates with the wall of t e central perforation 3 in the lowermost flange 2 to secure the s 001 against accidental displacement from t e spindle 4. v

In order'to properly direct the upperfiange of the spool upon the drl ing s incle 4, I pro- \ide a centenng dexice 16, -ch ispreforably made of sheet metal and has three arms 17 perforated near their outer ends for the reception of the upper contracted ends of the ri ets 5, in order to secure the centering dexiee between the upper shoulders 6 on the riets and the upper flange of the ribbon spool. By these means the centering de ice, which is contained between the ri'. ets, is securely united to the spool and is maintained adjacent to the up er flange thereof. The central ortion of t e centering de'. ice has a conoida form as indicated at 18, with an inner sloping wall 19 and a central perforation for the reception of the driuing spindle 4. The inner sloping wall of the centering de'. ice terminates at the central perforation 3 in the upper flange so that the central perforation in the centering deuiee and the perforation 3 in the upper flange are in register. By these means the upper spool flange may be readily guided upon the upper end of the driuing s indle. The centering deziee is flaring or ell-shaped with its widest portion or mouth downward so that howeer carelcssly the spool may be put on, the free or upper end of the spindle will strike within the 'mouth and thus compel the roper seating or attachment of the spool. he lower flange ma be readily slipped onto the spindle but wit out the centering de". ice it is difficult and time-consuming to fit the upper flange to the spindle. By the use of this deiice a spool may now be quickly and properly fitted upon the spindle at both flanges.

' What-I claim as new and desire to secure l by Letters Patent, is:

A ribbon spool for typewriting niachines comprising flanges with central perforations therein for the reception of :l driiing spindle, ii ets which nnii said flanges, and a centering de\ ice secured to the spool by said rivets and box ing a wall iliat slopes towards l the central perforation in one of said flanges.

2. A rib )Oli spool for lypewriting me- 11- Th free end portion of the spring curved i chines compris ng flanges with central perfo in one o said flanges.

3. A ribbon spool for typewriting machines comprising flanges having central er- 'forations therein for the reception of'ariving s indle, shouldered rivets arranged aroun saidcentral perforations and connecting said flanges and maintainin 'thems aced apartand forming a core for the spoo and around which the ribbon is wound, and a centering device comprising-a sheet metal plate having a central perforation-"therein wh ch registers with a central perforation in one of said flanges and also having a slop "wall which terminates at the central opening in the flange; p 4; A ribbon spool for typewriting machines comprising flanges having central perforations therein for the reception of a dm'v- 1 ing spindle, three shouldered rivets situated at equal distances from said central perfior'ation, said rivets connecting said flanges and -maintaining them s aced apart and forming .a core for the s 00 and around which the ribbon-is woun and acentering devide forguiding the spool on a driving spindle, said centering dence comprising a conoidal central portion which registers with a central opemng in one of said flanges, and a set of per- 1 forated-arms for the receotion of said rivetsand by means of which the centering device is secured to the ribbon spool.

Signed at Syracuse, in the county of Ononda a, and State of New York this 18th day of 4 0 Ju y AD. 1907 GEORGE E; BR'AND/ Witnesses; ALBERT'KUNTZ,

ARTHURH, CRITTENDEN 

